msm: kgsl: Init FT log level in device init

Currenlty FT log level is init in debugfs init, debugfs
could be removed from commercial software and we might
miss FT logs, initializing FT log level in device init
prevents this.

Change-Id: If6ea02735dd250ecb7579cc0b485145dddb1b6d6
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>